Bump Microsoft.Testing.Extensions.VSTestBridge from 2.1.0 to 2.2.1

---
updated-dependencies:
- dependency-name: Microsoft.Testing.Extensions.VSTestBridge
  dependency-version: 2.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tests/PolylineAlgorithm.Tests/PolylineAlgorithm.Tests.csproj

@@ -17,7 +17,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
-		<PackageReference Include="Microsoft.Testing.Extensions.VSTestBridge" Version="2.1.0" />
+		<PackageReference Include="Microsoft.Testing.Extensions.VSTestBridge" Version="2.2.1" />
 		<PackageReference Include="MSTest" Version="4.1.0" />
 		<PackageReference Include="Microsoft.Testing.Platform.MSBuild" Version="2.1.0" />
 		<PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.6.2" />